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binti Ismail NN, Sapina Abdullah UU @. Determination of Phenolic and Antioxidant Properties in Tea and Spent Tea Under Various Extraction Method and Determination of Catechins, Caffeine and Gallic Acid by HPLC. Int. J. Adv. Sci. Eng. Inf. Technol. [Internet]. 2015 Jun. 22 [cited 2024 Jun. 2];5(3):158-64. Available from: http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/520